Pretty cool video of a substance at it's triple point. I've always heard of the triple point, but have never actually seen it. Essentially what's happening is at the right temperature and pressure, a substance will attempt to go into an equilibrium state between solid liquid and gas. So what does that mean? It means boiling, freezing, condensing, melting, sublimation and deposition are all occurring simultaneously. I was always told it's very difficult to achieve and stay at the proper temp and pressure to observe this, but the video shows it quite well. Very cool stuff.

After drilling for two decades through more than two miles of antarctic ice, Russian scientists are on the verge of entering a vast, dark lake that hasn’t been touched by light for more than 20 million years. Scientists are enormously excited about what life-forms might be found there but are equally worried about contaminating the lake with drilling fluids and bacteria.